Thread-parting mechanism for looms.



H. A. OWEN. THREAD PARTING' MECHANISM FOR LOOMS. APPLICATION FlLED OCT. 22. I915- Patented June 5, 1917.

WLMQEEEE: y m Q I rirnizrnn narnntr oration.

HENRY A. OVTEN, 0E WHITINSVILLE, MASSACHUSETTS) ASSIGNOR TO THE WHITIN MACHINE 'WORKS, OE WHITINSVILLIE, MASSACHUSETTS, A CORPORATION OF MASSA- cnosn'rrrs.

1,228.,tl14t.

To all whom it may concern:

Be it known that I, Hnunr A. OWEN, a citizen of the United States, and resident of lVhitinsville, county of Worcester, State of ll lassachusetts, have invented an Improvement in Thread Parting Mechanism for Looms, of which the following description, in connection with the accompanying drawings, is a specificatiom like characters on the drawings representing like parts.

This invention relates more especially to automatic filling-replenishing looms making use of a filling feeler whereby the filling bobbin is replenished. prior to complete exhaustion. In this type of loom when the nearly exhausted filling bobbin is ejected it leaves a trailing filling end between the cloth and the shuttle which must be cut to prevent being drawn back in to the cloth and thus causing an imperfection. There are many mechanical devices of a more or less complicated nature for accomplishing the cutting of this filling end. Owing to their liability of getting out of proper adjustment they are the source of considerable trouble to the weavers and of imperfections in the cloth being woven. 1

The object of my present invention is to pvercome this objection by making use of a simple and inexpensive device comprising an electric current having in its circuit a heated resistance wire whereby the trailing filling end is parted by coming in contact with the heated surface of the wire. By means of a cut-out suitably arranged to be thrown in or out of action through connection with the ejecting motion of the weft replenishing mechanism an electric current passes through the contact wire only when the filling replenishing motion acts to eject a spent bobbin.

I preferably locate the contact Wire on a loom temple of any ordinary construction, but suitably insulated therefrom or the wire may be located independent of the temple by fixing it to some stationary part of the loom in such a position as to be in the path of the trailing filling end at the instant the lay is beating up the filling in the cloth being woven.

The novel features of my invention will be fully described in the subjoined specification and particularly pointed out in the follow ing claims.

Figure 1 is a transverse section of a por- Specification of Letters Patent.

rnrinan-rnnrrns MECHANISM; non Looms.

ltfatented June 5, 1917.

Application filed October 22, 1915. Serial No. 57,362.

tion of a loom provided with an automatic filling replenishing mechanism and thread parting means embodying one form of my present invention, the View being taken. on line X hr of Fig. 2.

Fig. 2 is a plan view of a portion of apparatus shown in Fig. l and shows the trailing filling end as being in contact with the parting means ready to be severed.

Fig. 3 is an enlarged view of the insulated holder of the resistance or contact wire.

Fig. 4 is a plan view of same.

Referring to the drawings 1 is the lay, 2 is the breast beam to which is attached the weft replenishing bobbin feeder 3 holding the bobbin ejecting mechanism, comprising the transferring lever 41, the spring 5, and the hunter dog (3. Filling replenishment is controlled from the filling feeler mechanism (not shown in drawings) through the rockshaft 7'to which is fixed the arm 8 which acts on the hunter dog 6 through the lifting arm 9 whereby the dog 6 is liftdd into the path of the hunter 10 whenever the filling is to be replenished. The above a common construction of automatic filling replenishing looms and does not form any novel part of my invention, and therefore no further description is necessary.

As shown in Fig. 2 the trailing end 11 of the ejecting filling bobbin; is being drawn in contact withthe resistance Wire 12 which. is held between the terminals 13 and 14 fixed in the insulating block 15. This block is fixed to the temple 16 in such a position as to bring the resistance wire 12 in the path of the filling thread when it is being drawn by the shuttle from the cloth into the shuttle box. The resistance wire 12 is in an electrical circuit comprising the terminals 13 and 141:, the battery 17, the connecting wires 18 and 19, the cut-out 20, and the rigid arm 21 which is in rigid connection with the roclcshaft 7 but insulated therefrdm. The opening and closing of the circuit is effected by means of the arm 21 being swung out ofor into contact with the cut-out by action of the filling indicating mechanism transmitted through the rock-shaft 7. Normally during the weaving from a full filling bobbin the circuit is open as the arm 21 is out of contact with the cut-out 20 and therefore no current passes through the resistance wire, consequently the filling is not parted by coming in contact With it, but when the filling on the bobbin is exhausted or nearly so and at the instant the empty bobbin is to be ejected for the replacement of a full one, the circuit is closed and an electric current passes through the resistance Wire generating heat sufiicient to burn and thus sever the trailing filling end which is then drawn away by the ejected bobbin. As the act of'ejecting a spent bobbin takes buta small fraction of a second there is no danger of fire resulting from the heat in the resistance Wire as the electric current is instantly switched off With the return of the ejecting mechanism to normal position.

My invention is not restricted in its application to an automatic filling replenishing loom with a filling feeler mechanism as it is equally applicable to an automatic filling replenishing loom using the ordinary filling fork exhausting indicating motion in Which the absence of a filling end throws the filling replenishing mechanism into action.

c Having fully described my invention, What I claim as new, and desire to secure by Letters Patent, is:

1. In a loom having an automatic filling weenie replenishing mechanism, the combination of said mechanism and means for severing the trailing filling end of the ejected filling bobbin, said means comprising" an electric circuit controlled by the filling indicating motion of the replenishing mechanism, said circuit including a resistance part whereby the trailing filling end is parted on coming in contact with it due to the heat generated therein by the current.

2. Ina loom having an automatic filling replenishing mechanism the combination of said mechanism an electric circuit, a cut-out in theelectric circuit actuated by the filling indicating motion Whereby'the electric current is controlled and a resistance part in the electric circuit situated in the path of the trailing filling end whereby the same is severed by being drawn in contact With the heated surface of the resistance part. In testimony whereof, I have signed this specification in the presence of tWo Witnesses.

' HENRY A. OWEN.

Witnesses a.

EDWIN W. MEEK, JAMns J. DUNDAS. 

